Mercury had a rare celestial event on Monday as the stars saw the planet – in the form of a small black dot – pass between the Sun and Earth.
The event, known as Mercury Transit, began around 7:35 p.m., and lasted more than five hours. The smallest planet in the solar system is also closest to the sun.
The East Coast, Canada, South and Central America should see the whole show, weather permitting.
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"At present, the planet looks like a tiny flaw traveling through the sun as it passes in front of the sun," Space.com reports.
The majority of the world catches only a small transit slider. Observers in Asia and Australia could not see it.
In Maryland, clouds prevented NASA solar astrophysicist Alex Young from getting a clear view.
"This is a failure, but the whole event was still great," Young wrote in an email to the Associated Press. "Both to see it from space and share it with people from all over the country and the world."
NASA Orbits the Solar Dynamics Observatory provides live coverage of the event.
Nasa tweets photos of the transit, including one from Mercury. crossing the sun behind the Washington Monument, the planet is hardly visible.
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The event only happens 13 times in a century, according to NASA. The last transit seen from Earth was in 2016.
The next transit is scheduled to happen in 2032, but will not be visible from North America, which can see the next one in 2049.
The Associated Press presented this report.